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Related Manuals for LAUREL LTS6 Series
Summary of Contents for LAUREL LTS6 Series
- Page 1 Model LTS6 RS232 OR RS485 SERIAL INPUT, ANALOG OUTPUT TRANSMITTER Modbus or Custom ASCII Protocol OWNERS MANUAL LAUREL Electronics Inc. 3183-G Airway Ave, Costa Mesa, CA, 92626, USA Tel: (714) 434-6131 Fax: (714) 434-3766 • Website: www.laurels.com...
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Page 2: Ordering Guide, Serial Input Transmitter
1. ORDERING GUIDE, SERIAL INPUT TRANSMITTER Configure a model number in this format: LTS60, CBL04 LTS6…Transmitter with 4-20 mA, 0-20 mA, ACCESSORIES 0-10V or -10V to +10V isolated analog CBL04……RS232 cable, two 3-pin connec- output, RS232 or RS485 serial data tors on transmitter end, DB9 input, and dual 120 mA solid state connector on computer end. -
Page 3: Table Of Contents
2. TABLE OF CONTENTS ORDERING GUIDE, SERIAL INPUT TRANSMITTER ............2 TABLE OF CONTENTS ....................... 3 INTRODUCTION, SERIAL INPUT TRANSMITTER .............. 4 RECEIVING & UNPACKING YOUR TRANSMITTER ............5 SAFETY CONSIDERATIONS ....................6 TRANSMITTER FIELD WIRING ..................7 JUMPER SETTINGS ......................8 PROGRAMMING YOUR TRANSMITTER ................ -
Page 4: Introduction, Serial Input Transmitter
3. INTRODUCTION, RS232 OR RS485 SERIAL INPUT TRANSMITTER The LTS6 serial input to analog output transmitter (or serial-to-analog converter) accepts numeric readings embedded in streaming RS232 or RS485 ASCII serial data, and converts these to an isolated, scalable 4-20 mA, 0-20 mA, 0-10V or -10V to +10V analog output. The LTS6 utilizes an LT counter transmitter board, but no signal conditioner board. -
Page 5: Receiving & Unpacking Your Transmitter
4. RECEIVING & UNPACKING YOUR TRANSMITTER Your transmitter was carefully tested and inspected prior to shipment. Should the transmitter be damaged in shipment, notify the freight carrier immediately. In the event the transmitter is not configured as ordered or is inoperable, return it to the place of purchase for repair or replacement. Please include a detailed description of the problem. -
Page 6: Safety Considerations
5. SAFETY CONSIDERATIONS Warning: Use of this transmitter in a manner other than specified may impair the protection of the device and subject the user to a hazard. Visually inspect the unit for signs of damage. If the unit is damaged, do not attempt to operate. Caution: •... -
Page 7: Transmitter Field Wiring
6. TRANSMITTER FIELD WIRING - 7 -... -
Page 8: Jumper Settings
7. JUMPER SETTINGS Serial Signal Duplex Jumpers Termination Resistor* E6 a = Transmit Full None E6 c = Receive RS485 Half E6 b + d** E6 c RS232 Full None None The termination resistor jumper settings should only be selected if the transmitter is the last device on an RS485 line longer than 200 feet (60 m). - Page 9 WHEN TO CHANGE JUMPERS Your transmitter case does not need to be opened if jumpers have already been set by your distributor. Otherwise you will need to open the case and either set jumpers or verify that the factory default jumpers positions will meet your needs. Factory default jumper settings are for RS232 input and 4-20 mA output.
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Page 10: Programming Your Transmitter
8. PROGRAMMING YOUR TRANSMITTER OVERVIEW Serial input transmitters are programmed using a PC with an RS232 port and Instrument Setup (IS) software, which provides a graphical user interface. The software allows uploading, editing, downloading and saving of setup data. CONNECTING TO YOUR PC Use a 3-wire RS232 cable (P/N CBL04) to connect your transmitter to the COM port of your PC. - Page 11 9600 as the Baud Rate. You will be able to change your protocol and baud rate later under the Communication setup tab. Click on Establish, and the two fields at the bottom of the screen should turn green and display your communication parameters and the counter-transmitter revision level.
- Page 12 SETTING UP BASIC OPERATION Set Signal input to None. Set Time Out to 000.00 Secs if you want the analog output to be held indefinitely in the absence of a new serial input, or specify another time in seconds. Ignore Signal Input, Gate Time, Filter and Power-On Total, as these parameters do not apply to the serial output transmitter.
- Page 13 Remote 1-4 allow multiple value to be extracted from Laureate transmissions. Data sequences with up to three data values can be generated by Laureate digital panel meters and transmitters (current reading, Peak, Valley). Data sequences with up to four data values can be generated by Laureate counters (Items 1, 2, 3, Peak).
- Page 14 SETTING UP COMMUNICATIONS (REMOTE A & S MODES) The above screen will appear under the Communication tab if Remote A or Remote S has been selected as Display Type under the Input+Display tab. These two modes are not able to extract data from an ASCII string that contains multiple data values and non-numeric characters.
- Page 15 SETTING UP COMMUNICATIONS (REMOTE C MODE) The above screen will appear under the Communication tab if Remote C has been selected as Display Type under the Input+Display tab. This mode is able to extract data from ASCII strings that contain multiple data values and non- numeric characters.
- Page 16 SETTING UP THE ANALOG OUTPUT Under the Analog Out tab, set Source to Item 3. Under Range, select 0-20 mA, 4-20 mA, 0-10V or -10V to +10V as your desired analog output. Enter your Lo Range Reading and Hi Range Reading.
- Page 17 SETTING UP RELAY ALARMS OPERATION Dual AC/DC solid state relays rated 120 mA are standard for alarm or setpoint control and are independently set up via the “Relay Alarms” tab. Set “Alarm Source” to “Item 3” as illustrated. For online help with any data entry field, press the F1 key. •...
- Page 18 • Deviation. A positive number that can be added or subtracted from the setpoint, depending on the Deviation Type, to determine when an alarm becomes Active or Inactive. • Alarm Source. Depending on the Signal Input Mode and Function selected under the Input+ Display tab, the alarm can be assigned to any of up to three Items, for example to Item 1 (A rate / B rate), Item 2 (A rate), or Item 3 (B rate).
- Page 19 • Alarm Type. Selections are Non-Latching and Latching. Under Non-Latching, the relay is only closed (or open) while the Alarm State is Active. Under Latching, the activated relay remains closed (or opens) until reset regardless of the Alarm State. Resetting is normally achieved by temporarily grounding one of the transmitter’s control inputs, which has been set to Function Reset under the “Input+Display”...
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Page 20: Custom Ascii Protocol Transmitter Communications
9. CUSTOM ASCII PROTOCOL TRANSMITTER COMMUNICATIONS All setup parameters are entered into the transmitter via Instrument Setup (IS) software, including the serial communication format, digital address, operating mode, analog output scaling, and relay operating modes and setpoints. 1. SERIAL COMMUNICATION FORMAT The Custom ASCII serial communication format for both RS232 and RS485 is the following: Modes .... - Page 21 Remote S is not addressable, and data representing a value to be retransmitted as an analog output is received via a point-to-point connection. The value is stored where it may be selected for Alarm comparisons. If a Coded Alarm character is included, it overrides the internal alarm comparisons.
- Page 22 = Data. Number of digits can be 1-6. = Decimal point (optional). = Alarm Character (optional). A = no alarms, B = alarm 1 active, C = alarm 2 active, D = alarms 1 & 2 active. <CR> = Carriage return character Remote S Data Format: SDDDDDD.A<CR>...
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Page 23: Specifications, Serial Input Transmitter
10. SPECIFICATIONS, SERIAL INPUT TRANSMITTER Serial Data Input Signal Levels ........RS232, full-duplex RS485, half-duplex RS485 (selectable) Protocol ......... Modbus RTU, Modbus ASCII, Custom ASCII (software selectable) Serial Connector ................ Detachable dual 3-position plugs Analog Output (standard) Output Levels ..........0-20 mA, 4-20 mA, 0-10V, -10V to +10V (selectable) Compliance at 20 mA .................. -
Page 24: Warranty
In the event of a defect during the warranty period, the defective unit may be returned to the seller, which may be Laurel or a Laurel distributor. The seller may then repair or replace the defective unit at its option. In the event of such a return, freight charges from the buyer shall be paid by the buyer, and freight charges from the seller shall be paid by the seller.